Furnace provided with regenerative chambers.



H. POETTER. FURNAGE PROVIDED WITH REGBNERTIVE CHAMBERS. APPLIOATION FILED DBO. 22, 1913.

1,100,985, Patented June 23,1914,

Figi

COLUMBIA PLANOGRAPII C0.,WASH|NCITON. D. c.

UNITED STATES PATENT FFIQE.

HEINRICH POEITER, OF DUSSELDORF, GERMANY.

FURNACE PROVIDED WITH REGENERATIVE CHAMBERS.

To all whom it may concern Be it known that I, HEINRICH Ponr'riin,l

erence being had to the accompanying drawings.

This invention relates to improvements in furnaces that are provided with regenerative chambers, and wherein, while the` waste gases and the fresh air flow alternately through one or other of these chambers, the direction of the flame within the furnace is maintained constant; and the invention has for its object to provide improved means for effecting the reversal of flow of the heated air and waste gases, that is to say for causing each of these to flow alternately through one or other of the regenerative chambers.

Now according to this invention, the reversal of the direction of flow of the waste gases and the fresh air is effected by means of a slide provided with three ports, of which the central port is always used for supplying air to the flame, while the two outer ports alternately conduct the waste' gases to one or the other of the regenerative chambers.

The accompanying drawings illustrate by way of example one construction of apparatus according to this invention, Figure l showing the apparatus in vertical section and Fig. 2 in horizontal sect-ion on the line II-II of Fig. l, showing the slide in one position, and Fig. 3 is a similar horizontal section showing the slide in a second position. Fig. 4 is a vertical cross section on line 4 4, Fig. 2 and Fig. 5 a similar section on line 5 5, Fig. 3.

Air that enters through the reversing valve Z and which has already undergone preliminary heating in one of the regenerative chambers g or 7L is supplied to the llame by the Hue a, while the waste gases escape through the flue b and through slide c into the other regenerative chamber and from there through the reversing valve Z and through the flue m to the stack. The reversal is edected by reversing first the ordinary reversing valve Z and by means of the Specification of Letters Patent.

Application led December 22, 1913.

Patented June 23, 1914. Serial No. 808,104.

slide c which is preferably arranged to run on rails c, over a slide bed c2, and is provided with three ports d, e and The apertures 7c in the regenerators g and L through which these are placed in communication with the ilues a and b and one of which is seen in Fig. l, lie directly beneath the ports e and f of the slide in the position shown in Fig. 2, and the flues a, Z2 are each bifurcated as shown at a1,a2, 1, b2,

these branches being in alinement -with the ports e, f. `When the slide'is inthe position shown in Fig. 2, the branches b1, a2, being closed by the slide as shown, the waste gases pass from the flue b through the port f ofthe slide into the regenerative chamber g, while the fresh air simultaneously enters through the reversing valvevl and passes through the regenerative chamber L and the port c into the fresh air supply flue a. When it is desired to effect reversal, the slide e is moved in the direction of the arrow shown in Fig. 2, until, as shown in Fig. 3, the port CZ stands opposite to the flue b, whereupon the waste gases pass through the port d into the regenerative chamber 7i, while thefresh air, after having been heated' by passing through the regenerative chamber g will pass through the port e into the flue a. It will be seen that theY bifurcation vof the flues a and 5 in proximityto the slide enables heated air to pass from one or other of the regenerators through the central port e to the air flue a, while the waste gases pass through one or other vof the lateral ports cl, j tothe remaining regenerator. It will be seen, moreover, that the central port e of the slide opens laterally toward the air flue a and is laterally closed toward the waste gas flue b while the side ports cl and f, on the contrary open laterally toward the waste gas flue b, and are laterally closed toward the air flue a.

A reversing device in accordance with this invention is suitable for use in any furnace wherein it is desirable that while the direction of the flame remains constant, a reversal of the regenerative chainbersshould take place at certain stated intervals. Regenerative furnaces in which the direction of the flame remains constant, when provided with a device in accordance with this 'invention are especially suitable for use in connection with open hearth furnaces for reheating` the material under treatment in rollingmills- `What I claim is :-d

l. ln a furnace provided with regenerative chambers, a slide bed wherein there are provided orifices communicating with said chambers, air and waste gas flues eachv provided in proximity to said slide bed with a bifurcated portion the branches of which are in alinement with said orifices, and a slide movable upon said slide bed from one to the other of two positions, said slide having formed in it a central port and two side ports the central port and one or other of tlieside ports being situated in either position of the slide directly above aforesaid orifices, and the central port being in alineient and communication with one of the branches of the air flue, while the side port situated above an orifice is in yalinement and communication with one of the branches of the waste ngas flue.

.2. In a furnace provided with regenerative chambers, air and waste gas flues in alinenient with each other, and eachprovided with bifurcated portions the branches of which are also in alineinent with each other, and a slide movable transversely of said flues from one to the other of two extreme and operative positions, and provided with a central Vand two side ports of which the central port is open laterally toward the air flue and closed laterally toward the waste gas flue, while the side ports are open laterally toward the waste gas flue and closed laterally toward the air flue, said ports being so spaced that when the slide is in either extreme position, two of its ports are in. alineinent with the bifurcated branches of: theiiues.

3. The combination with a furnace provided with two regenerative chambers ar-- ranged side by side, of a slide bed arranged? transversely of said chambers and having formed in it a pair of ports arranged side by side and respectively communicatingi` with said chambers, a slide furnished withl` a central and two side ports arranged side` by side, said slide being movably niountedl on said slide bed, andthe ports in the slid t being so spaced that the central and one-ori other of the side ports can be brought; into juxtaposition and communication with', aforesaid ports in the slide bed, an air sup-l ply flue and awaste gas flue that are in caminunication with the interior of the fur-L nace, and that when the slide is in the afore said position are thereby respectively placedl in communication with the regenerativel: chambers throughthe aforesaid central andiE side port of the slide.

4. The combination with a furnace provided with two regenerative chambers ar"i ranged side by side-of a vslide'bed arranged transversely of Isaid chambers and having formed in it a pair of ports arranged side `by side and respectively communicating with said chambers, a slide furnished with a central and two side ports arranged side by side, said slide being movably mounted on said slide bed, and the ports in the slide being so spaced that the central and one or other of the side ports can be brought inte juxtaposition and communication with aforesaid ports in the slide bed, an air supply flue and a waste gas flue that are in communication with the interior of the furnace and are arranged transversely of the slide bed on opposite sides thereof, and are each bifurcated in proximity to the slide and slide bed, the central port of the slide having lateral.communication with one branch of the air fiue bifurcation, and aforesaid side port of the slide having` lateral communication with one branch of the waste gas flue bifurcation, the remaining branch of each flue 4bifurcation being closed by a portion of the slide when in the position described.

5. The combination with a furnace provided with two regenerative chambers arranged side by side, of a slide'bed arranged transversely of said chambers and having formed in it a pair of ports arranged side by side and respectively commun'icating` with said chambers, a slide furnished with a central and two side ports arranged side by side, said slide being movably mounted on said slide bed, and the ports therein being adapted to be put in communication with passages located adjacent to three different faces of the slide.

6. The combination with a furnace provided with ftwo regenerative chambers arranged side'by side, o'f a slide bed arranged transversely of said chambers and having formed in it a pair of ports arranged `side by side and respectively communicating with said chambers, a slide furnished witha central and two sideports arranged side by side,-said slide being vmovably mounted on said slide bed and the ports therein being adapted to be put in communication with passages located adj acent "to three Ldifferent faces of theslide, two of these passagesfleading yhorizontally in lopposite directions land being respectively adapted 1for the supply of fresh air and the escape of waste ga-s while the third of the `passa-ges leads `vertically downward toward a regenerating chamber.

y7. The combination with a furnace pro- -vided with two regenerative chambers v`arranged side by side, of a slide bed arranged transversely of said chambers and having formed in it a pair of ports arranged side by side and vrespectively communicating with said chambers, a slide furnished ywith acentral and `two yside port-s arranged side izo by side, said slide being movably mounted on said slide bed, the central port being adapted to serve for the supply of fresh air and the two side ports for the passage of the waste gases.

8. The combination with a furnace provided with two regenerative chambers arranged side by side, of a slide bed arranged transversely of said chambers and having formed in it a pair of ports arranged side by side and respectively communicating with said chambers, a slide furnished with a central and two side ports arranged side by side, said slide being movably mounted on said slide bed, and the ports in the slide being s0 spaced that the central and one or other of the side ports can be brought into juxtaposition and communication with aforesaid ports in the slide bed, an air supply flue and a waste gas flue that are in communication with the interior of the furnace, and that when the slide is in the aforesaid position are thereby respectively placed in communication with the regenerative chambers through the aforesaid central and side port of the slide, between said valve ports and said air sup* ply flue, waste gas flue, and said regenerative chambers being situated in three different directions.

9. The combination with a furnace pro- Copies the communications f vided with two regenerative chambers arranged side by side, of a slide bed arranged transversely of said chambers and having formed in it a pair of ports arranged side by side and respectively communicating with said chambers, a slide furnished with a central and two side ports arranged side by side, said slide being movably mounted on said slide bed, and the ports in the slide being so spaced that the central and one or other of the side ports can be brought into juxtaposition and communication with aforesaid ports in the slide bed, an air supply flue and a waste gas flue thatI are in communication with the interior of the furnace, and that when the slide is in the aforesaid position are thereby respectively placed in communication with the regenerative chambers through the aforesaid central and side port of the slide, the communications between said valve ports and said air supply ue, waste gas flue, and said regenerative chambers being situated respectively in two opposite horizontal directions and a vertically downward direction.

In testimony whereof I affix my signature in the presence of two witnesses.

HEINRICH POETTER. [Ls] Witnesses:

ALBERT NUFER, FRANCES NUFER.

of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, I). C. 

